'''Frederick Walter Simms''' (24 December 1803 – 27 February 1865) was a British civil engineer
Born in London, Simms suffered from ill-health in his younger years (as his obituary put it, he was "of delicate constitution",
[ and some difficulty was encountered in finding him suitable employment until via the influence of his brother he was despatched to Ireland as an assistant to the Ordnance Survey.
After leaving Ireland Simms became an astronomical assistant at the Royal Observatory, Greenwich|Royal Observatory, Greenwich, under John Pond. He resigned his post on 31 October 1835, apparently having hoped to be awarded the post of First Assistant, for which he was "quite incompetent" in the words of Sir George Biddell Airy.] [ He returned to his former occupation as a surveying|surveyor and civil engineer, visiting France with Captain R. T. Claridge|Richard Tappin... ]